"The attack called Operation Aurora is larger than just [the attacks acknowledged at the] 30 companies. That attack is still in operation and is much larger," says Greg Hoglund, founder and CEO of HBGary, which today published a report on Operation Aurora that recaps where things stand with the investigation.

He and other forensics firms say they have no direct evidence implicating the Chinese government in the Aurora attacks, but that doesn't mean other investigators or officials have it and just aren't sharing it publicly, Hoglund says. HBGary has found trails left behind in the Aurora code by its creators that are "very specific to the developer who compiled the malware," Hoglund says, and it has Chinese language ties.

HBGary has identified registry keys, IP addresses, suspicious runtime behavior, and other data about the Aurora malware and its origins using the firm's latest analysis tool, he says.

Hoglund says HBGary was able to identify "markers" specific to the way the Aurora developer wrote the malware. But he says his firm did not include this in its new report. "This is not in the report because we don't want him to know what we know about his coding," he says. "[It] is algorithmic in nature."

The Aurora "knock-off" malware based on the publicly released Aurora IE exploit and Metasploit's Aurora exploit wouldn't carry these markers, he says, so investigators would be able to identify whether it was from the same attacker or attackers that hit Google, Adobe, and others.

"We're really just getting started in tracing him," Hoglund says.

Kevin Mandia, CEO of forensics firm Mandiant, also says his firm's investigators are getting close to exposing the creators of the Operation Aurora malware. "We feel like we know a couple of them in their coding -- we recognize their trademarks ... down to the person."